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10 vulnerabilities by openbullet
CVE-2026-39908 (GCVE-0-2026-39908)
Vulnerability from nvd – Published: 2026-06-08 16:47 – Updated: 2026-06-08 18:06 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source
Summary
OpenBullet2 through version 0.3.2 on Windows contains a credential disclosure vulnerability that allows remote attackers to capture the NTLMv2 hash of the process user by configuring a job proxy source with a UNC path pointing to an attacker-controlled server. When the job starts, the application attempts to load proxies from the UNC path, triggering an SMB authentication attempt that discloses the NTLMv2 hash, which can then be relayed or cracked offline.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25856 (GCVE-0-2026-25856)
Vulnerability from nvd – Published: 2026-06-08 16:50 – Updated: 2026-06-08 18:48 X_Open Source Exclusively Hosted Service
VLAI
Title
OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
Summary
OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25855 (GCVE-0-2026-25855)
Vulnerability from nvd – Published: 2026-06-08 16:49 – Updated: 2026-06-08 18:12 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload
Summary
OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources, causing the server to execute the scripts and return output as proxy lines, resulting in arbitrary command execution on the host as the process user.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0.2.5 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25559 (GCVE-0-2026-25559)
Vulnerability from nvd – Published: 2026-06-08 16:52 – Updated: 2026-06-09 14:35 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Path Traversal via Wordlist Endpoint
Summary
OpenBullet2 through version 0.3.2 contains a path traversal vulnerability in the wordlist endpoint that allows authenticated attackers to perform arbitrary file read, write, and delete operations by supplying unsanitized absolute paths to the upload handler and wordlist functions. Attackers can chain the file write and delete primitives to achieve remote code execution by manipulating critical system files such as /etc/passwd, with full system impact since the application runs as root by default.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25555 (GCVE-0-2026-25555)
Vulnerability from nvd – Published: 2026-06-08 16:53 – Updated: 2026-06-08 17:50 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header
Summary
OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-04 00:00
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CVE-2026-25555 (GCVE-0-2026-25555)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:53 – Updated: 2026-06-08 17:50 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header
Summary
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Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-04 00:00
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CVE-2026-25559 (GCVE-0-2026-25559)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:52 – Updated: 2026-06-09 14:35 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Path Traversal via Wordlist Endpoint
Summary
OpenBullet2 through version 0.3.2 contains a path traversal vulnerability in the wordlist endpoint that allows authenticated attackers to perform arbitrary file read, write, and delete operations by supplying unsanitized absolute paths to the upload handler and wordlist functions. Attackers can chain the file write and delete primitives to achieve remote code execution by manipulating critical system files such as /etc/passwd, with full system impact since the application runs as root by default.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25856 (GCVE-0-2026-25856)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:50 – Updated: 2026-06-08 18:48 X_Open Source Exclusively Hosted Service
VLAI
Title
OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
Summary
OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
Credits
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CVE-2026-25855 (GCVE-0-2026-25855)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:49 – Updated: 2026-06-08 18:12 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload
Summary
OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources, causing the server to execute the scripts and return output as proxy lines, resulting in arbitrary command execution on the host as the process user.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0.2.5 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
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CVE-2026-39908 (GCVE-0-2026-39908)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:47 – Updated: 2026-06-08 18:06 X_Open Source
VLAI
Title
OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source
Summary
OpenBullet2 through version 0.3.2 on Windows contains a credential disclosure vulnerability that allows remote attackers to capture the NTLMv2 hash of the process user by configuring a job proxy source with a UNC path pointing to an attacker-controlled server. When the job starts, the application attempts to load proxies from the UNC path, triggering an SMB authentication attempt that discloses the NTLMv2 hash, which can then be relayed or cracked offline.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
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